Isembard

Isembard is a UK- and US-based advanced manufacturing company building a distributed network of software-powered precision factories for critical industries including aerospace, defence, space, satellites, drones, nuclear energy, and motorsport. Founded in 2024 by Alexander Fitzgerald and named after engineer Isambard Kingdom Brunel, the company runs its factories on MasonOS, a proprietary AI-powered operating system that manages quoting, scheduling, production, and quality control across its factory network. Its model reshores high-precision component manufacturing closer to home to address supply-chain vulnerabilities in the Western industrial base, scaling from prototypes to production and offering factory franchise opportunities. Isembard has raised a Series A led by Union Square Ventures and operates factories across the UK, US, France, and Germany. There is no public developer API; MasonOS is an internal software platform, so this profile captures the company's identity and web surface rather than an API.

Isembard is profiled on the APIs.io network. Tagged areas include Company, Manufacturing, Advanced Manufacturing, Aerospace, and Defence.

Isembard’s developer surface includes engineering blog, support, and 5 more developer resources.

🌐 Visit website 📡 Source on GitHub

10.2/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5

0 APIs

CompanyManufacturingAdvanced ManufacturingAerospaceDefencePrecision ComponentsIndustrialReshoring

Kin Score

Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5

Composite quality — 10.2/100 · minimal

Contract Quality 0.0 / 25

Developer Ergonomics 1.3 / 20

Commercial Clarity 2.1 / 20

Operational Transparency 0.0 / 13

Governance 0.0 / 12

Discoverability 6.8 / 10

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 15

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/isembard: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 1

Pricing, plans, and the legal terms of use

PrivacyPolicy

PrivacyPolicy

Company 3

The organization behind the API

Website

Website

Blog

Blog

Careers

Careers

Source (apis.yml)

aid: isembard
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/isembard.png
name: Isembard
description: Isembard is a UK- and US-based advanced manufacturing company building a distributed network of software-powered
  precision factories for critical industries including aerospace, defence, space, satellites, drones, nuclear energy, and
  motorsport. Founded in 2024 by Alexander Fitzgerald and named after engineer Isambard Kingdom Brunel, the company runs its
  factories on MasonOS, a proprietary AI-powered operating system that manages quoting, scheduling, production, and quality
  control across its factory network. Its model reshores high-precision component manufacturing closer to home to address
  supply-chain vulnerabilities in the Western industrial base, scaling from prototypes to production and offering factory
  franchise opportunities. Isembard has raised a Series A led by Union Square Ventures and operates factories across the UK,
  US, France, and Germany. There is no public developer API; MasonOS is an internal software platform, so this profile captures
  the company's identity and web surface rather than an API.
url: https://raw.githubusercontent.com/api-evangelist/isembard/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- union-square-ventures
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- Company
- Manufacturing
- Advanced Manufacturing
- Aerospace
- Defence
- Precision Components
- Industrial
- Reshoring
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://www.isembard.com
- type: Blog
  url: https://www.isembard.com/news
- type: Support
  url: https://www.isembard.com/contact
- type: PrivacyPolicy
  url: https://www.isembard.com/privacy-and-franchise-policy
- type: Careers
  url: https://www.isembard.com/careers
- type: LLMsTxt
  url: llms/isembard-llms.txt
- type: DomainSecurity
  url: security/isembard-domain-security.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence